railway RRB Group D Mock Test Series 2024-25 General Science Chemistry

 ନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁଟି ପାନୀୟ ଜଳକୁ ଜୀବାଣୁମୁକ୍ତ କରିବା ପାଇଁ ବ୍ୟବହୃତ ହୁଏ?

1
 ବେକିଙ୍ଗ ସୋଡା
2
 ଧୋଇବା ସୋଡା 
3
 ବେକିଂ ପାଉଡର
4
 ବ୍ଲିଚିଂ ପାଉଡର
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